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问题描述
我总是用(A)可空<> .HasValue ,因为我喜欢的语义。然而,最近我在做别人的现有code碱基他们用在(B)可空<> != NULL 完全相反。有没有理由使用了另一种呢,还是纯粹的preference?
(一)
诠释?一个;如果(a.HasValue) ...(二)
诠释? b:如果(B!= NULL) ...解决方案
编译器替换空比较一起的HasValue 的电话,所以没有真正的区别。只要做到取其更可读/更有意义,你和你的同事。
I always used (a) Nullable<>.HasValue because I liked the semantics. However, recently I was working on someone else's existing code base where they used (b) Nullable<> != null exclusively instead. Is there a reason to use one over the other, or is it purely preference?
(a)
int? a; if (a.HasValue) ...(b)
int? b; if (b != null) ...解决方案
The compiler replaces null comparisons with a call to HasValue, so there is no real difference. Just do whichever is more readable/makes more sense to you and your colleagues.
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